package com.zhang.security;

import cn.hutool.json.JSONUtil;
import com.zhang.common.lang.Result;
import com.zhang.utils.JwtUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.Authentication;
import org.springframework.security.web.authentication.logout.LogoutSuccessHandler;
import org.springframework.security.web.authentication.logout.SecurityContextLogoutHandler;
import org.springframework.stereotype.Component;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;


//退出登录处理器
@Component
public class LogoutSuccessHandler_ implements LogoutSuccessHandler {

    @Autowired
    JwtUtil jwtUtil;

    @Override
    public void onLogoutSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException {

        if(authentication != null){     //认证的身份凭证不为空则手动退出登录
            new SecurityContextLogoutHandler().logout(request,response,authentication);
        }

        response.setContentType("application/json;charset=UTF-8");
        ServletOutputStream outputStream = response.getOutputStream();

        response.setHeader(jwtUtil.getHeader(),"");
        Result result = Result.succ("");

        outputStream.write(JSONUtil.toJsonStr(result).getBytes("UTF-8"));

        outputStream.flush();
        outputStream.close();
    }
}
